@mixin clear_fix {
  display:block;
  zoom:1;
  overflow:hidden;
}

@mixin border-radius($radius-size){
  border-radius: $radius-size;
}

@mixin line{
  display:block;
  content: "";
  width:100%;
  height: 1px;
  position: relative;
  top: 4em;
  left:50%;
  margin:0 2em;
}